﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using BZV.Core;
using BZV.Foundation;
using BZV.Foundation.Business;
using System.Threading;

namespace BZV.Core
{
    /// <summary>
    ///Common 的摘要说明
    /// </summary>
    public class Common
    {
        private static UpdateThread m_UpdateThread = new UpdateThread();
        private static bool m_bIsRunning = false;
#region 更新数据
        public static void StartUpdate()
        {
            m_UpdateThread.StartUpdate();
        }

        public static void StopUpdate()
        {
            m_UpdateThread.StopUpdate();
        }
#endregion

#region 常用方法
        /// <summary>
        /// 获取客户端IP地址（无视代理）
        /// </summary>
        /// <returns>若失败则返回回送地址</returns>
        public static string GetHostAddress()
        {
            string userHostAddress = HttpContext.Current.Request.UserHostAddress;

            if (string.IsNullOrEmpty(userHostAddress))
            {
                userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
            }

            //最后判断获取是否成功，并检查IP地址的格式（检查其格式非常重要）
            if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress))
            {
                return userHostAddress;
            }
            return "127.0.0.1";
        }

        /// <summary>
        /// 检查IP地址格式
        /// </summary>
        /// <param name="ip"></param>
        /// <returns></returns>
        public static bool IsIP(string ip)
        {
            return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
        }
#endregion
        
    }
}